Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Construction equipment

a construction equipment and equipment technology, applied in the direction of constructions, soil shifting machines/dredgers, etc., can solve the problems of reduced driving performance of the vehicle, increased vehicle weight, reduced visibility to the front, above and to the rear of the operator's cab, etc., to facilitate attaching and detaching operations, simple structure, and low cost

Inactive Publication Date: 2005-01-06
KOMATSU LTD
View PDF11 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] The present invention is made in view of the above-described problems, and has its object to provide construction equipment of which protection structure for an operator's cab when the construction equipment rolls over can be constituted to be favorable in visibility, and favorable in transportability, and assembling and disassembling operability.

Problems solved by technology

This leads to an increase in the entire weight of the vehicle due to an increase in the weight of the operator's cab 85, and there arises the problem that reduction in the driving performance of the vehicle is caused.
(2) Further, there arises the problem that visibility to the front, to above and to the rear from the operator's cab 85 is inhibited by a thick supporting column of the cab guard 90.
However, the cab guard 90 has a number of mounting portions to the upper revolving superstructure frame 82 and the mounting portion space inside the vehicle body is small, thus extremely complicating its detaching and attaching operations.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Construction equipment
  • Construction equipment
  • Construction equipment

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0031] According to a constitution of the first embodiment, the following operation and effects are obtained.

[0032] (1) When the hydraulic excavator 1 rolls over, the operator's cab protection member 11 of the portal frame 10A and the working machine 5 is in contact with the ground, whereby the hydraulic excavator 1 is supported by the portal frame 10A and the working machine 5, and therefore deformation of the operator's cab 7 which is located between the portal frame 10A and the working machine 5 is prevented or restrained. As a result, the operator space inside the operator's cab 7 is secured.

[0033] (2) At this time, the portal frame 10A is placed in close vicinity to the rear surface of the operator's cab 7 to place the operator's cab protection member 11. As a result, the strong operator's cab protection frame 10A can be placed easily in small to large construction equipment.

[0034] (3) The operator's cab protection frame 10A is placed in close vicinity to the rear surface of ...

second embodiment

[0036] Based on FIG. 3, a second embodiment will be explained. A portal frame 10B includes the operator's cab protection member 11 placed in close vicinity to the upper side 7a of the rear surface of the operator's cab 7, the left and the right supporting columns 12A and 13B (supporting members 12A and 13B) which are mounted to the left and the right of the operator's cab protection member 11 and are provided upright in the vertical direction, and a reinforcement member 14 mounted in between the intermediate portions in the vertical direction of the left and right supporting columns 12A and 13B. A mounting seat 4c is placed on an outside surface of the vertical plate member 4b at the side of the operator's cab 7 among a pair of left and right vertical plate members 4b and 4b which are provided at the upper revolving superstructure frame 4 and support a base end portion of the working machine 5 (see FIG. 1) to be swingable up and down. The supporting column 13B placed at an inner sid...

third embodiment

[0040] Based on FIG. 4, a third embodiment will be explained. A portal frame 10C (an operator's cab protection frame 10C) includes the operator's cab protection member 11 placed in close vicinity to the upper side 7a of the rear surface of the operator's cab 7, left and right supporting columns 12B and 13C (supporting members 12B and 13C) which are mounted to the left and the right of the operator's cab protection member 11 and are provided upright in the vertical direction, and the reinforcement member 14 mounted in between the intermediate portions in the vertical direction of the left and the right supporting columns 12B and 13C. The portal frame 10C is placed to straddle the machine room 8b adjacent to a rear side of the operator's cab 7. The left and the right supporting columns 12B and 13C of the portal frame 10C are respectively fastened to a predetermined numbers of threaded holes 4f of a mounting seat 4e which is placed at the outside surface of the upper revolving superstr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Construction equipment of which protection structure for an operator's cab when rolling over can be constituted to be favorable in visibility, transportability, and assembling and disassembling operability is provided. For this purpose, the construction equipment includes an upper revolving superstructure frame (4) rotatably loaded on a base carrier (3); and an operator's cab (7), a working machine (5) and a counterweight (6) which are provided on the upper revolving superstructure frame. Further, an operator's cab protection frame (10A), which includes an operator's cab protection member (11), supporting members (12A, 13A) for supporting the operator's cab protection member and mounting members (19, 19) with which base end portions of the supporting members are mounted to a vehicle body, is mounted to the upper revolving superstructure frame, and is provided upright behind the operator's cab.

Description

TECHNICAL FIELD [0001] The present invention relates to construction equipment, and particularly relates to construction equipment having a protection structure for an operator's cab at a time of rolling over. BACKGROUND ART [0002] Various kinds of means for preventing or restraining deformation of an operator's cab to protect the operator when construction equipment turns over (refers to the state in which the construction equipment turns about 90 degrees) or rolls over (refers to the state in which the construction equipment turns about 180 degrees or more) are conventionally proposed in the construction equipment. A structure in which a shock absorber is attached to a side surface portion of the operator's cab provided at an upper part of a vehicle body capable of being self-propelled to relieve an impact load which acts on the operator's cab by the shock absorber when the construction equipment turns over is described on pages 2 to 3 and in FIG. 4 of Japanese Patent Application ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): E02F9/16E02F9/18E02F9/24
CPCE02F9/24E02F9/163E02F9/16
Inventor MORI, TADASHI
Owner KOMATSU LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com